已知数据库book，要求使用MyBatis-Plus和Spring Boot框架完成服务器端应用的开发，能够给客户端提供符合RESTful规 范的JSON数据接口，并用在idea中用postman进行相应测 试

好的，以下是简单的步骤：

1. 创建Spring Boot项目，添加MyBatis-Plus和相关依赖：

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
    <version>3.x.x</version>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid-spring-boot-starter</artifactId>
    <version>1.2.6</version>
</dependency>

2. 配置数据库连接和MyBatis-Plus：

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/book?useUnicode=true&characterEncoding=UTF-8&useSSL=false
    username: root
    password: root
    driver-class-name: com.mysql.cj.jdbc.Driver
  # MyBatis-Plus配置
  mybatis-plus:
    mapper-locations: classpath:mapper/*.xml
    type-aliases-package: com.example.book.entity

3. 创建实体类和Mapper接口：

@Data
public class Book {
    private Long id;
    private String name;
    private String author;
    private BigDecimal price;
}

public interface BookMapper extends BaseMapper<Book> {
}

4. 创建控制器类，实现RESTful接口：

@RestController
@RequestMapping("/api/books")
public class BookController {
    @Autowired
    private BookMapper bookMapper;

    @GetMapping("")
    public List<Book> list() {
        return bookMapper.selectList(null);
    }

    @GetMapping("/{id}")
    public Book get(@PathVariable Long id) {
        return bookMapper.selectById(id);
    }

    @PostMapping("")
    public boolean add(@RequestBody Book book) {
        return bookMapper.insert(book) > 0;
    }

    @PutMapping("/{id}")
    public boolean update(@PathVariable Long id, @RequestBody Book book) {
        book.setId(id);
        return bookMapper.updateById(book) > 0;
    }

    @DeleteMapping("/{id}")
    public boolean delete(@PathVariable Long id) {
        return bookMapper.deleteById(id) > 0;
    }
}

5. 使用Postman进行测试，例如：

- GET请求：http://localhost:8080/api/books
- POST请求：http://localhost:8080/api/books，请求体为：

{
    "name": "Java编程思想",
    "author": "Bruce Eckel",
    "price": 99.99
}

以上就是使用MyBatis-Plus和Spring Boot框架完成服务器端应用开发的简单步骤。